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People seem to confuse lathe leveling with being 'level'. It has nothing to do with 'level'. In this context level is the term used to describe twist. This is why lathes can be installed on ships or trucks. Or consider slant bed CNC lathes. Or vertical lathes. The maple table top attached to...

Installing a lathe, if you hope to get accurate work from it, is not a trivial matter. A wooden bench can work, but is not the best option. When it comes to anything machine tools the more rigid and heavy the better. To set the lathe bed properly it needs to be 'leveled'. This means installing...

Julius de Waal did an excellent re-draw of those plans here: http://www.vapeuretmodelesavapeur.com/telechargements4/chaudi-re-verticale-d75mm-sandy-campbell.pdf Dave.

Alright, some progress! I'd needed to profile the eccentric rods and my normal practice would be to print out a drawing to scale, glue it to a blank and have at with a file. Unfortunately my printer had long since died and I'd not been motivated to replace it. Turns out eccentric rods are the...

Thanks Cymro77.

There's not much to add I'm afraid. I've been busy, just not with loco parts. :( There's been a bit of shop re-organizing, work on another project, house and garden work, and preparing for a new baby due on Sept 4th... All that's been done is slotting the eccentric straps for the rods...

Wow! Heaps of spring information there. Thanks Terry. Dave.

What method do you use to stress relieve springs Terry? The info I posted is only what I gleaned from charts, not actual experience. I'd be interested to know what temps and times you've had success with. Thanks. Dave.

To be pedantic the oven bake is for 'stress relief' rather than 'tempering'. There is various charts to be found regarding stress relieving springs; I'd post links but there seems to be a spam filter blocking posts with links. There's a bit of variance in the charts but generally you need to go...

I haven't had a lot of time for the loco lately so just a little bit more on the straps: The rough cored hole leaves no reference for centering in the four jaw so a piece of flat bar is clamped in the tool post and the top edge brought to center height. Then we can eyeball the split line and the...

I've never built this engine, and I'm not familiar with it at all, but I had a look at the plans (which are fairly vague), and came up with this: The valve can be orientated in any position on the crank with the set screw, so all that matters is how far around the valve to cut, and the...

Now I drill through at 2.3mm and then drill 3mm clearance to 6mm deep, which is about half the depth of the side boss. Then the bottom half is tapped 6BA: Northumbrian by DAVID BANER, on Flickr Then it's over to the mill to split the piece in two. I'm using a 0.5mm saw here so I take it easy...

Up next are the eccentric straps. I'm not overly impressed with the castings I'd received, but they can be made to work. They're not going to match the drawing but the critical dimensions should be achievable. First a clean face: Northumbrian by DAVID BANER, on Flickr Now that there's...

Almost done! I don't need the chucking piece on the pump anymore so that gets parted off and cleaned up: I need a lock nut to clamp the pump to the stay. I didn't have the right sized Hex bar so a stub of 3/4 round goes to the rotary table and get milled into shape. Then to the lathe and...

Next job is to turn down the barrel and thread it 1/2 x 32. I've got a Die to do the threading as the lathe is metric. I also managed to forget my lathe Die Holder is metric too. :wallbang: More tooling! On the plus side the bigger lathe got some use for a change. An adaptor was turned up...

The pump continues: I'd planned to ream the pump barrel to size, but for a similar price I decided to get something that would be used more than once: Northumbrian by DAVID BANER, on Flickr Small bore gauges are not super accurate but will get me close enough. Now I needed a small boring bar...

Looking forward to this build. The Lion is a great looking Loco. I checked out your channel too. Great work on the Hoglet. Totally jealous of your loco collection. Dave.

Neil - Thanks for the input. I had a few stainless 7/32 balls on hand so I did a comparison test of vice vs hammer, on a piece of 3/8 brass rod drilled and reamed 4mm. One end was pressed in the vice, the other hit with a hammer: Ball seating by DAVID BANER, on Flickr A suction test on...

I've done a little research into ball valves so I thought I do a post on what I found. For those who don't know ball type valves are found all over model locomotives. They're variously called 'check valves' or 'clack valves' and elsewhere 'one way valves' or 'non-return valves'. Here's a...

Thanks for looking in Cymro77. Not a lot done on the loco this weekend, just one easy part, the axle pump ram: Just a piece of 5/16" Stainless steel round cut and cleaned up to 26.2mm - whoops - drawing misread; make that 30.95mm: Northumbrian by DAVID BANER, on Flickr Then clamped in the...